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Finding the Fourth Proportional to 186,596.10, 279,930.60 and 74,257.20

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Solution

The fourth proportional to 186,596.10, 279,930.60 and 74,257.20 is: 111,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,596.10 : 279,930.60 = 74,257.20 : x
  2. Step 2: Convert to fraction form
    186,596.10/279,930.60 = 74,257.20/x
  3. Step 3: Cross multiply
    186,596.10x = 279,930.60 × 74,257.20
  4. Step 4: Simplify right side
    186,596.10x = 20,786,862,550.32
  5. Step 5: Solve for x
    x = 20,786,862,550.32/186,596.10
  6. Step 6: Final answer
    x = 111,400.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.